Watch Catalog

Casio module 3486

Quartz module. 3486 is the number engraved on the caseback of these watches, and Casio files its operation manual under it. 1 watch in the catalog runs on it.

How to operate module 3486

Short steps in our words. The buttons are lettered as in Casio's operation guide, where each task's page is given.

Set the time and date

  1. In the Timekeeping Mode, hold A for at least two seconds and let go when SET stops flashing: the daily step target flashes.
  2. Press C to step through the settings: daily step target, seconds, hour, minute, 12/24-hour format, year, month, day, button tone, then light duration.
  3. On the seconds, press D to reset them to 00.
  4. On any other setting, use D and E to change it.
  5. Press A to leave the setting screen.

Good to know

Resetting the seconds between 30 and 59 adds one minute.

For the 12/24-hour format, press C four times from the step target until 12H or 24H flashes, then press D to switch. In 12-hour format, P marks p.m.

When the watch is connected to a phone running CASIO WATCHES, the time is set for you; the watch connects by itself four times a day, at around 12:30 a.m., 6:30 a.m., 12:30 p.m. and 6:30 p.m.

To take the time from the phone now, press D in the Timekeeping Mode: the Bluetooth mark and TIME flash until the watch connects.

Setting the time by hand on the watch cancels the automatic switching between standard time and summer time.

In any mode, hold C for at least two seconds to go to the Timekeeping Mode.

From Casio's guide, page 16

Summer time

  1. Open the CASIO WATCHES app on your phone.
  2. On the watch, hold D for at least two seconds and let go when the Bluetooth mark starts to flash; it stops flashing once the watch is connected.
  3. In the app, follow the screen to change your Home City summer time setting.

Good to know

The watch has no button setting for summer time; it is set from the app.

DST shows on the display while the current time is summer time.

From Casio's guide, page 7

Home City

  1. Open the CASIO WATCHES app on your phone.
  2. On the watch, hold D for at least two seconds and let go when the Bluetooth mark starts to flash; it stops flashing once the watch is connected.
  3. In the app, pick the new city as the World Time city, then follow the screen to swap the Home Time and the World Time: the World Time city becomes the Home City.

Good to know

The watch has no Home City picker; the Home City changes by swapping it with the World Time city. The World Time city, shown in the Dual Time Mode, is picked in the app from about 300 cities.

Without the app, the Dual Time can be set by hand: in the Dual Time Mode hold A for at least two seconds until the hour flashes, use D and E to change it, press C for the minutes (15-minute steps), then press A.

In the Dual Time Mode, hold E for at least two seconds to swap the Home City time and the Dual Time, for example when you arrive in another time zone.

Auto time adjustment does not work for 24 hours after the Home Time and World Time are swapped in the app.

From Casio's guide, page 6

Set an alarm

  1. In the Timekeeping Mode, press C five times: the Alarm Mode shows (ALM), after the Stopwatch, Recall, Timer and Dual Time Modes.
  2. Press D until the alarm you want shows, AL1 to AL5.
  3. Hold A for at least two seconds and let go when the hour starts to flash.
  4. Use D and E to set the hour; in 12-hour format, P marks p.m.
  5. Press C: the minutes flash. Use D and E to set them.
  6. Press A to leave the setting screen.
  7. Check that On shows next to the alarm time; if - - shows, press E to switch the alarm on.
  8. Hold C for at least two seconds to go back to the Timekeeping Mode.

Good to know

The alarm beeps for 10 seconds; press any button to stop it.

In the Alarm Mode, press D to pick an alarm or SIG (hourly time signal) and E to switch it between On and - - (off).

The alarm mark shows on the display while one or more alarms are on.

From Casio's guide, page 15

Light

  1. Press B to light the face.
  2. In the Timekeeping Mode, hold B for at least three seconds to switch Auto Light on or off (LT shows while it is on).
  3. To change how long the light stays on, hold A in the Timekeeping Mode until SET stops flashing, press C nine times until LT shows, then press D to choose 1 (1.5 seconds) or 3 (3 seconds).
  4. Press A to leave the setting screen.

Good to know

With Auto Light on, the face lights when you turn the watch 40 degrees or more toward you. Auto Light switches itself off after about six hours.

The light goes off when an alarm starts to sound.

From Casio's guide, page 17

Button tone

  1. In the Timekeeping Mode, hold A for at least two seconds and let go when SET stops flashing.
  2. Press C eight times so that KEY♪ or MUTE flashes.
  3. Press D to switch between KEY♪ (button tone on) and MUTE (button tone off).
  4. Press A to leave the setting screen.

Good to know

MUTE shows on the display while the button tone is off.

From Casio's guide, page 18

Stopwatch

  1. In the Timekeeping Mode, press C once: the Stopwatch Mode shows (STW).
  2. Press D to start, D to stop, and D again to resume.
  3. While it runs, press E for a split and lap time; both show at the same time.
  4. When it is stopped, press E to reset it to zero.
  5. Hold C for at least two seconds to go back to the Timekeeping Mode.

Good to know

It counts in 1/100 seconds for the first hour, then in seconds, up to 23 hours 59 minutes 59 seconds.

Up to 200 split and lap records are kept; view them in the Recall Mode (REC), the mode after the Stopwatch Mode, by pressing A.

Press A while measuring to show the current time in the lower display; press A again to go back.

The watch cannot connect with a phone while the stopwatch is running.

From Casio's guide, page 9

Countdown timer

  1. In the Timekeeping Mode, press C until the Timer Mode shows (TMR, after the Recall Mode).
  2. If the timer is running, press D to pause it, then E to reset it to its start time.
  3. Hold A for at least two seconds and let go when the number of repeats flashes; use D and E to set it (01 to 20).
  4. Press C, then use D and E until 1 shows.
  5. Press C: the minutes flash. Use D and E to set them.
  6. Press C: the seconds flash. Use D and E to set them.
  7. Press A to leave the setting screen.
  8. Press D to start, D to pause, and D to resume. To stop it, pause it and press E to reset it to the start time.

Good to know

The start time can be set in 1-second steps up to 60 minutes.

The watch beeps every second for the last five seconds of the countdown; it does not beep when the battery is low.

For a five-second pre-count before the countdown, press E in the reset state to enable Auto Start, then press D.

Up to five timers can be set as an interval timer; the CASIO WATCHES app can also set them.

The watch cannot connect with a phone while the timer is counting down.

From Casio's guide, page 13

Factory reset

  1. Hold C for at least two seconds to go to the Timekeeping Mode.
  2. Hold A for at least two seconds and let go when SET stops flashing.
  3. Press C: the seconds flash.
  4. Hold E for at least five seconds and let go when RESET ALL stops flashing.
  5. Press A to leave the setting screen.

Good to know

This returns the watch settings, pedometer, stopwatch, timer and alarm to factory defaults.

It also deletes the pairing information, so the watch has to be paired with the phone again.

From Casio's guide, page 18

Module 3486 specs

Type
quartz
Power
Approx. battery life: 3 years on CR2025 · other watches that take CR2025
Accuracy
±15 seconds per month (with no mobile link function)
Functions
World time, Stopwatch, Timer, Alarm/hourly time signal, Light, Light color, Calendar, Mute feature, 12/24-hour format
Manual
Casio's operation guide for module 3486

Watches with the 3486